Add v1.1.0 with progress streaming, timeouts, and git validation.

Surface Cursor run progress to stderr and response payloads, enforce
CURSOR_TIMEOUT_SECONDS, validate git repos before delegate, and fix
resume session cwd persistence. Includes docs, tests, and packaging.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -0,0 +1,5 @@
+CURSOR_API_KEY=
+CURSOR_DEFAULT_MODEL=composer-2.5
+CURSOR_DEFAULT_CWD=/Users/nearxos/Projects
+CURSOR_TIMEOUT_SECONDS=1800
+CURSOR_REQUIRE_GIT_REPO=true